公开(公告)号：US20190342121A1

公开(公告)日：2019-11-07

申请号：US16515665

申请日：2019-07-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meng CHENG ,  Xiuqiang XU ,  Yiqun WU ,  Yan CHEN

IPC: H04L25/02 ,  H04L5/00 ,  H04J11/00

Abstract: Example data transmission methods and apparatus are described. One example method includes obtaining at least two signature sequences used to perform multiple access for at least two to-be-sent data packets by a user equipment. The user equipment processes the at least two data packets by respectively using corresponding signature sequences, to obtain at least two transmit sequences. The user equipment sends the at least two transmit sequences to a network device on a same time-frequency resource. Then the network device obtains the at least two signature sequences used by the user equipment to send the at least two transmit sequences, and separately detects a corresponding transmit sequence based on each signature sequence, to obtain the at least two data packets. The user equipment can transmit a plurality of data packets on a same time-frequency resource in a same slot.

公开(公告)号：US20190215222A1

公开(公告)日：2019-07-11

申请号：US16356712

申请日：2019-03-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meng CHENG ,  Yiqun WU ,  Yan CHEN

IPC: H04L27/34 ,  H04L27/36 ,  H04J11/00 ,  H04L25/03

CPC classification number: H04L27/3405 ,  H04J11/003 ,  H04L5/0021 ,  H04L25/03898 ,  H04L27/36 ,  H04L27/38

Abstract: A data transmission method and apparatus are provided. The method includes: modulating, based on a codebook, every N information bits of to-be-transmitted data into one M-dimensional modulation symbol, where the codebook is generated based on an M-dimensional modulation constellation, the M-dimensional modulation constellation includes M modulation constellations, a constellation point in an mth modulation constellation in the M modulation constellations is obtained by mapping N information bits based on an mth information bit subset, the mth information bit subset includes information bits on some locations in the N information bits, and a union set of M information bit subsets respectively corresponding to the M modulation constellations is the N information bits, where M and N are integers greater than or equal to 2, and m is 1, 2, . . . , or M; and sending the generated M-dimensional modulation symbol. The technical solutions can reduce complexity when a modulation signal is demodulated.

公开(公告)号：US20190173711A1

公开(公告)日：2019-06-06

申请号：US16252027

申请日：2019-01-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meng CHENG ,  Yiqun WU ,  Lei WANG ,  Xiuqiang XU ,  Yan CHEN

IPC: H04L27/26 ,  H04L27/38 ,  H04L5/00

Abstract: Embodiments of the present invention provide a resource mapping method. The method includes: obtaining a modulation symbol generated based on M code words, where M is a positive integer greater than or equal to 1; mapping the modulation symbol generated based on the M code words to a time-frequency resource in one or more mapping patterns, where the mapping pattern is a pattern of mapping every Q modulation symbols to one mapping unit, the mapping unit includes F resource units, F is a positive integer greater than or equal to 1, Q is a positive integer meeting 1≤Q≤F, the mapping pattern includes a sparse mapping pattern, and the sparse mapping pattern is a mapping pattern meeting F≥2 and 1≤Q